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Hudson commented on HIVE-2451: ------------------------------ Integrated in Hive-trunk-h0.21 #965 (See [https://builds.apache.org/job/Hive-trunk-h0.21/965/]) HIVE-2451: TABLESAMBLE(BUCKET xxx) sometimes doesn't trigger input pruning (Siying Dong via He Yongqiang) heyongqiang : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1172891 Files : * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/SamplePruner.java * /hive/trunk/ql/src/test/results/clientpositive/sample10.q.out * /hive/trunk/ql/src/test/results/clientpositive/sample2.q.out * /hive/trunk/ql/src/test/results/clientpositive/sample4.q.out * /hive/trunk/ql/src/test/results/clientpositive/sample6.q.out * /hive/trunk/ql/src/test/results/clientpositive/sample9.q.out * /hive/trunk/ql/src/test/results/compiler/plan/sample2.q.xml * /hive/trunk/ql/src/test/results/compiler/plan/sample4.q.xml * /hive/trunk/ql/src/test/results/compiler/plan/sample6.q.xml > TABLESAMBLE(BUCKET xxx) sometimes doesn't trigger input pruning as regression > of HIVE-1538 > ------------------------------------------------------------------------------------------ > > Key: HIVE-2451 > URL: https://issues.apache.org/jira/browse/HIVE-2451 > Project: Hive > Issue Type: Bug > Reporter: Siying Dong > Assignee: Siying Dong > Attachments: HIVE-2451.1.patch, HIVE-2451.2.patch, HIVE-2451.3.patch > > > Example: > select count(1) from <bucket_table> TABLESAMPLE(BUCKET xxx out of yyy) where > <partition_column> = 'xxx' > will not trigger input pruning. > The reason is that we assume sample filtering operator only happens as the > second filter after table scan, which is broken by HIVE-1538, even if the > feature doesn't turn on. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira